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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-01-550-9027 (153-067)

NIIN: 01-550-9027
In stock
NSN: 5331-01-550-9027
FSC Code: 5331
MPN: 153067

5331-01-420-6073 (15-3-0400-15)

NIIN: 01-420-6073
In stock
NSN: 5331-01-420-6073
FSC Code: 5331
MPN: 153040015

5331-01-528-5824 (1530-4X4X10-73)

NIIN: 01-528-5824
In stock
NSN: 5331-01-528-5824
FSC Code: 5331
MPN: 15304X4X1073

5331-01-206-3202 (4423R1-6B)

NIIN: 01-206-3202
In stock
NSN: 5331-01-206-3202
FSC Code: 5331
MPN: 4423R16B

5331-01-212-6155 (442-2347)

NIIN: 01-212-6155
In stock
NSN: 5331-01-212-6155
FSC Code: 5331
MPN: 4422347

5331-01-260-8955 (4420961-0110)

NIIN: 01-260-8955
In stock
NSN: 5331-01-260-8955
FSC Code: 5331
MPN: 44209610110

5331-00-492-0359 (4420171-0231)

NIIN: 00-492-0359
In stock
NSN: 5331-00-492-0359
FSC Code: 5331
MPN: 44201710231

5331-01-543-2121 (153-003-E-052ITEM185)

NIIN: 01-543-2121
In stock
NSN: 5331-01-543-2121
FSC Code: 5331
MPN: 153003E052ITEM185

5331-00-728-3269 (44-1969)

NIIN: 00-728-3269
In stock
NSN: 5331-00-728-3269
FSC Code: 5331
MPN: 441969

5331-00-728-3268 (44-1971)

NIIN: 00-728-3268
In stock
NSN: 5331-00-728-3268
FSC Code: 5331
MPN: 441971

5331-00-728-2680 (44-1968)

NIIN: 00-728-2680
In stock
NSN: 5331-00-728-2680
FSC Code: 5331
MPN: 441968

5331-00-828-5532 (44-1839)

NIIN: 00-828-5532
In stock
NSN: 5331-00-828-5532
FSC Code: 5331
MPN: 441839

5331-00-828-5537 (44-1818)

NIIN: 00-828-5537
In stock
NSN: 5331-00-828-5537
FSC Code: 5331
MPN: 441818

5331-01-265-1206 (4-418018-00)

NIIN: 01-265-1206
In stock
NSN: 5331-01-265-1206
FSC Code: 5331
MPN: 441801800

5331-01-236-1736 (44-153-03)

NIIN: 01-236-1736
In stock
NSN: 5331-01-236-1736
FSC Code: 5331
MPN: 4415303

5331-01-115-8727 (4415172-912)

NIIN: 01-115-8727
In stock
NSN: 5331-01-115-8727
FSC Code: 5331
MPN: 4415172912

5331-00-921-3606 (44-1459)

NIIN: 00-921-3606
In stock
NSN: 5331-00-921-3606
FSC Code: 5331
MPN: 441459

5331-01-134-0614 (44-1458)

NIIN: 01-134-0614
In stock
NSN: 5331-01-134-0614
FSC Code: 5331
MPN: 441458

5331-00-942-0011 (44-1308-011)

NIIN: 00-942-0011
In stock
NSN: 5331-00-942-0011
FSC Code: 5331
MPN: 441308011

5331-01-374-4410 (1526S025)

NIIN: 01-374-4410
In stock
NSN: 5331-01-374-4410
FSC Code: 5331
MPN: 1526S025

5331-01-416-5303 (152-507)

NIIN: 01-416-5303
In stock
NSN: 5331-01-416-5303
FSC Code: 5331
MPN: 152507

5331-01-274-3035 (4410961-9060)

NIIN: 01-274-3035
In stock
NSN: 5331-01-274-3035
FSC Code: 5331
MPN: 44109619060

5331-00-090-3882 (4410951-9060)

NIIN: 00-090-3882
In stock
NSN: 5331-00-090-3882
FSC Code: 5331
MPN: 44109519060

5331-00-585-8486 (4410871-9060)

NIIN: 00-585-8486
In stock
NSN: 5331-00-585-8486
FSC Code: 5331
MPN: 44108719060

5331-01-320-2368 (4410772-9206)

NIIN: 01-320-2368
In stock
NSN: 5331-01-320-2368
FSC Code: 5331
MPN: 44107729206

5331-00-043-1860 (4410661-9100)

NIIN: 00-043-1860
In stock
NSN: 5331-00-043-1860
FSC Code: 5331
MPN: 44106619100

5331-00-087-8823 (441071-0040)

NIIN: 00-087-8823
In stock
NSN: 5331-00-087-8823
FSC Code: 5331
MPN: 4410710040

5331-00-571-9040 (4410591-9080)

NIIN: 00-571-9040
In stock
NSN: 5331-00-571-9040
FSC Code: 5331
MPN: 44105919080

5331-01-441-1772 (15-2390-52)

NIIN: 01-441-1772
In stock
NSN: 5331-01-441-1772
FSC Code: 5331
MPN: 15239052

5331-01-505-6039 (152-3968)

NIIN: 01-505-6039
In stock
NSN: 5331-01-505-6039
FSC Code: 5331
MPN: 1523968

5331-01-472-8855 (3-904N604-70)

NIIN: 01-472-8855
In stock
NSN: 5331-01-472-8855
FSC Code: 5331
MPN: 3904N60470

5331-01-016-7551 (4410181-9200)

NIIN: 01-016-7551
In stock
NSN: 5331-01-016-7551
FSC Code: 5331
MPN: 44101819200

5331-01-253-0850 (4410181-9080)

NIIN: 01-253-0850
In stock
NSN: 5331-01-253-0850
FSC Code: 5331
MPN: 44101819080

5331-00-895-3283 (4410173-9200)

NIIN: 00-895-3283
In stock
NSN: 5331-00-895-3283
FSC Code: 5331
MPN: 44101739200

5331-01-359-3054 (2-210N0674-70)

NIIN: 01-359-3054
In stock
NSN: 5331-01-359-3054
FSC Code: 5331
MPN: 2210N067470

5331-01-222-6882 (4410173-9160)

NIIN: 01-222-6882
In stock
NSN: 5331-01-222-6882
FSC Code: 5331
MPN: 44101739160

5331-01-255-1062 (4410173-9320)

NIIN: 01-255-1062
In stock
NSN: 5331-01-255-1062
FSC Code: 5331
MPN: 44101739320

5331-00-925-7837 (4410173-9070)

NIIN: 00-925-7837
In stock
NSN: 5331-00-925-7837
FSC Code: 5331
MPN: 44101739070

5331-00-112-1398 (4410171-9120)

NIIN: 00-112-1398
In stock
NSN: 5331-00-112-1398
FSC Code: 5331
MPN: 44101719120

5331-00-579-6446 (440955-7)

NIIN: 00-579-6446
In stock
NSN: 5331-00-579-6446
FSC Code: 5331
MPN: 4409557

5331-01-478-5997 (15221-33700)

NIIN: 01-478-5997
In stock
NSN: 5331-01-478-5997
FSC Code: 5331
MPN: 1522133700

5331-01-451-1724 (152080-022)

NIIN: 01-451-1724
In stock
NSN: 5331-01-451-1724
FSC Code: 5331
MPN: 152080022

5331-00-069-6025 (440106-07)

NIIN: 00-069-6025
In stock
NSN: 5331-00-069-6025
FSC Code: 5331
MPN: 44010607

5331-00-883-0507 (440106-06)

NIIN: 00-883-0507
In stock
NSN: 5331-00-883-0507
FSC Code: 5331
MPN: 44010606

5331-00-917-8263 (440106-03)

NIIN: 00-917-8263
In stock
NSN: 5331-00-917-8263
FSC Code: 5331
MPN: 44010603

5331-00-069-6023 (440106-04)

NIIN: 00-069-6023
In stock
NSN: 5331-00-069-6023
FSC Code: 5331
MPN: 44010604

5331-01-493-9609 (152042-022)

NIIN: 01-493-9609
In stock
NSN: 5331-01-493-9609
FSC Code: 5331
MPN: 152042022

5331-01-420-6067 (15-2-0300-15)

NIIN: 01-420-6067
In stock
NSN: 5331-01-420-6067
FSC Code: 5331
MPN: 152030015